If you want to enroll a non-registered domestic partner to your health plans, you must complete the Affidavit for Enrollment of Domestic Partners. Bystep guide to filling out and filing your papers in court can be found on the California Courts website.This form must be completed and returned to Human Resources Benefits Division, prior to enrollment of your Domestic Partner. Are there specific cohabitation laws that are set in place in California? Read more to find out from the family lawyers at Boyd Law. We use the most uptodate software and tools to ensure that all necessary forms are completed accurately and in accordance with current legal standards. This article describes California common law marriage in detail, from its history to the rights of unmarried couples living together. Family Law Self-Help Information. How to order: Visit VitalChek. Com and complete the ordering process.